If you happen to be trying to use a pirated CD-key many of them have been banned over the years because they've been used by players who ended up breaking the rules or getting used by griefers/hackers. If you do in fact own your own copy of the game and are trying to use your own legitimate CD keys, please shoot me a PM and I'll get you troubleshooted.

One more possibility is that if you rapidly try to log in while the server is booting up it will tell you "invalid password" and if that happens too many times in a row it will ban you until the server resets again. This may have been what happened if you were getting any "invalid password" messages upon logging in.

Either way just send me a ping and I'll try to figure it out and get you fixed up.